Essex 127-1published at 19 overs
Cook 70, Westley 27
There's just no stopping the run-fest.
Stuart Broad's first over goes for 10 and Essex are rattling along at more than six an over at a sun-baked Chelmsford.
Image source, Rex FeaturesSummary
Patel & Mullaney hundreds put Notts in final
Notts chase 371 - a record in England
Essex made 370-5; 113 off last 10 overs
Centuries for Cook & Ten Doeschate
Notts to play Worcs or Surrey in Lord's final on 1 July
Essex 127-1published at 19 overs
Image source, Rex FeaturesStuart Broad onpublished at 18.1 overs
Essex 121-1
Here we go, Stuart Broad finally enters the attack.
Oh dear, his first ball is on leg stump and Tom Westley guides it down to the fine-leg boundary.
Essex 117-1published at 18 overs
Cook 69, Westley 18
Samit Patel returns and prevents Essex from scoring any boundaries. That's been a rarity so far.
Six singles from the over, you do the math (s).
Essex 111-1published at 17 overs
Cook 66, Westley 15
Shot of the day!
James Pattinson overpitches and Tom Westley flicks it away with authority to the boundary.
The outfield looks lightning.
get involved Get Involvedpublished at 14:32 British Summer Time 16 June 2017
#bbccricket
Stuart Roberts: I'm sure I remember hearing how Cook couldn't play one day cricket.
Mike Baughan: Mr Cook possible opener for England?
Elliot Murphy: This looks like a run fest at Chelmsford!!
Essex 105-1published at 16 overs
Cook 65, Westley 10
Tom Westley is already enjoying himself.
The right-hander plonks Steven Mullaney back down the ground for fourpenneth and follows it up with an even better shot through mid-wicket next ball.
Still no Stuart Broad for the visitors. Strange.
Essex 95-1published at 15 overs
Cook 64, Westley 1
Oh Alastair you need to give them a chance. Bat right handed or with your eyes closed!
James Pattinson drifts slightly wide outside off stump and Cook biffs him to the boundary.
Eight off it, Cook is now the leading run scorer in the competition with 567 under his belt.
Chopra unlucky?published at 14.1 overs
Essex 88-1
Image source, Sky Sports GraphicHmm, replays suggest Varun Chopra may not have edged that behind.
It appears he hit the ground. He didn't look too annoyed as he walked off, so maybe he didn't even know.
WICKET Chopra (c Read b Mullaney) 23published at 14 overs
Essex 87-1
Image source, Rex FeaturesBreakthrough for Notts! Finally.
Steven Mullaney fires one in outside off stump and Varun Chopra nicks it behind to Chris Read.
It's a super catch from the veteran standing up to the stumps.
Tom Westley joins Alastair Cook in the middle.
Essex 84-0published at 13 overs
Chopra 23, Cook 55
That's the best over of the innings for Notts.
James Pattinson gives away absolutely nothing, except for a wide, and just two come from it.
get involved Get Involvedpublished at 14:16 British Summer Time 16 June 2017
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Edward Wilson: Is Alastair Cook showing that he could be England's answer at the top of the order in ODI's? Absolute run machine!
Ben Wilson: Maybe Cooky would have been useful on Wednesday.
James: Anyone know what Alistair Cooks fastest One Day 50 is? This surely has to be a close attempt?
I will dig into the archives shortly James! But I can't imagine there have been many quicker.
Essex 82-0published at 12 overs
Chopra 23, Cook 54
Steven Mullaney's first over goes for seven. There's just no stopping Essex at the moment.
Surely we can't have another 400?
Fifty for Alastair Cookpublished at 11.3 overs
Essex 81-0
Magnificent from the England man.
Cook chops Steven Mullaney to the third-man boundary to bring up his half-century off just 35 balls.
The strike-rate's up there with the best of them.
Essex 75-0published at 11 overs
Chopra 22, Cook 48
SIX!
James Pattinson comes into the attack but he can't stem the flow. The Australia paceman slams one in short and Varun Chopra pulls him for a max.
He also has a close lbw shout against the right-hander, but nothing doing.
Essex 67-0published at 10 overs
Chopra 16, Cook 48
Image source, Rex FeaturesWelcome to the party Varun! After watching Alastair Cook's antics from his deck chair, Chopra wants a piece of the cake and smashes Jake Ball over mid-off.
Cook continues on his merry way with a flick of the wrists through mid-wicket for four.
Madness.
Essex 56-0published at 9 overs
Chopra 11, Cook 43
This is just silly batting from Cooky.
Samit Patel drops one slightly short and he punches him to the point boundary - his seventh four.
Essex are flying.
Essex 50-0published at 8 overs
Chopra 10, Cook 38
Image source, Rex FeaturesRight, Alastair Cook is not human. He can't be.
The left-hander greets Jake Ball with a beautiful cover drive for four and then wafts him away for a single behind point.
Cook's strike-rate is currently at 140. He's making Chris Gayle look boring.
Essex 42-0published at 7 overs
Chopra 7, Cook 33
Finally a bit of control for Notts. Samit Patel bowls a tight first six with just a single from it.
Lovely stuff from the experienced all-rounder.
'I don't see much swing'published at 6.1 overs
Essex 41-0
Ebony Rainford-Brent
Ex-England batter on BBC Radio 5 live sports extraThis is going to have to be a day of change ups and variations for the bowlers, because batters like Cook and Chopra can settle in.
And Ebony is correct. Spinner Samit Patel is into the attack.
Essex 41-0published at 6 overs
Chopra 7, Cook 32
Image source, Rex FeaturesJake Ball is certainly getting a bit of movement off the pitch. He cuts one back into Varun Chopra and it strikes him high on the pad. Not out.
Ball does well to keep it to just a couple of singles off the over. The crowd are enjoying what they're seeing so far.